• DocumentCode
    1670005
  • Title

    A 106dB SNR hybrid oversampling ADC for digital audio

  • Author

    Nguyen, Khiem ; Adams, Bob ; Sweetland, Karl ; Chen, Huaijin ; McLaughlin, Kevin

  • Author_Institution
    Analog Devices Inc., Wilmington, MA, USA
  • fYear
    2005
  • Firstpage
    176
  • Abstract
    A ΔΣ ADC with a CT 1st-stage is presented. A hybrid tuning circuit adjusts the RC time constant to compensate for process, supply, and sampling rate variations. The ISI of the feedback DAC is eliminated by an RTZ scheme applied to the error current of the CT integrator. The ADC achieves 106dB SNR, -97dB THD+N, occupies 0.82mm2 in a 0.35μm CMOS process and dissipates 18mW.
  • Keywords
    CMOS integrated circuits; analogue-digital conversion; audio signal processing; circuit feedback; circuit tuning; digital-analogue conversion; integrating circuits; intersymbol interference; signal sampling; 0.35 micron; 18 mW; CMOS process; CT integrator; ISI; RC time constant; RTZ scheme; digital audio; error current; feedback DAC; hybrid oversampling ADC; hybrid tuning circuit; sampling rate variations; Circuit optimization; Clocks; Electromagnetic interference; Flip-flops; Harmonic distortion; Jitter; Sampling methods; Switched capacitor circuits; Switches; Voltage;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Solid-State Circuits Conference, 2005. Digest of Technical Papers. ISSCC. 2005 IEEE International
  • Conference_Location
    San Francisco, CA
  • ISSN
    0193-6530
  • Print_ISBN
    0-7803-8904-2
  • Type

    conf

  • DOI
    10.1109/ISSCC.2005.1493926
  • Filename
    1493926
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1670005